Basic College Mathematics (9th Edition)

by
Lial, Margaret L.; Salzman, Stanley A.; Hestwood, Diana L.

Published by
Pearson

ISBN 10:
0321825535

ISBN 13:
978-0-32182-553-7

Chapter 9 - Basic Algebra - Test: 16

Answer

1

Work Step by Step

We are given the expression $-5+3(-2)-(-12)$. According to order of operations, we must perform multiplication before adding and subtracting.
$-5+3(-2)-(-12)=-5+(3\times-2)-(-12)=-5+(-6)-(-12)$
Next, we can add and subtract from left to right.
$-5+(-6)-(-12)=-5-6-(-12)=-11-(-12)=-11+12=12-11=1$